Cleanup Socket class and remove it from the platform files.

src/d8-debug.cc

Index: src/d8-debug.cc
diff --git a/src/d8-debug.cc b/src/d8-debug.cc
index 29055007ea9a9143e924067670c709e0a1b723cf..602ae166bea5acd9e7e04a2b5a4595aa920f6659 100644
--- a/src/d8-debug.cc
+++ b/src/d8-debug.cc
@@ -29,8 +29,9 @@
 
 #include "d8.h"
 #include "d8-debug.h"
-#include "platform.h"
 #include "debug-agent.h"
+#include "platform.h"
+#include "platform/socket.h"
 
 
 namespace v8 {
@@ -171,21 +172,14 @@ void RunRemoteDebugger(Isolate* isolate, int port) {
 void RemoteDebugger::Run() {
   bool ok;
 
-  // Make sure that socket support is initialized.
-  ok = i::Socket::SetUp();
-  if (!ok) {
-    printf("Unable to initialize socket support %d\n", i::Socket::LastError());
-    return;
-  }
-
   // Connect to the debugger agent.
-  conn_ = i::OS::CreateSocket();
+  conn_ = new i::Socket;
   static const int kPortStrSize = 6;
   char port_str[kPortStrSize];
   i::OS::SNPrintF(i::Vector<char>(port_str, kPortStrSize), "%d", port_);
   ok = conn_->Connect("localhost", port_str);
   if (!ok) {
-    printf("Unable to connect to debug agent %d\n", i::Socket::LastError());
+    printf("Unable to connect to debug agent %d\n", i::Socket::GetLastError());
     return;
   }